The person who heard his crying on the baby monitor is a woman and she comes running in. She is very concerned and relieved to see that he is awake and OK. She tells him he was at the hospital for three weeks. Hugo remembers being underwater and the woman says he had been in a submarine. Now Hugo is even more confused now because he knows he was never on a submarine in his life.
The woman is very happy Hugo is alive and she takes off her shirt and holds him to her bosom. This makes Hugo think about the time his ex-girlfriend took off her shirt in his bedroom. Hugo decides to "go with the flow".